#include "bookmarks_dialog.h"

#include <QGridLayout>
#include <QLabel>
#include <QApplication>
#include <QDesktopWidget>
#include <QFrame>
#include <QImage>

#include "bookmarks.h"

BookmarksDialog::BookmarksDialog(QWidget * parent)
    :QDialog(parent,Qt::FramelessWindowHint)
{
    setModal(true);

	animation = new QPropertyAnimation(this,"windowOpacity");
	animation->setDuration(150);

    QHBoxLayout * layout = new QHBoxLayout();

    //bookmarks
    QGridLayout * bookmarksL = new QGridLayout();
	
	pages.push_back(new QLabel(tr("Lastest Page")));
	for(int i=0;i<3;i++)
		pages.push_back(new QLabel("-"));
	
	int heightDesktopResolution = QApplication::desktop()->screenGeometry().height();
	int height,width;
    height = heightDesktopResolution*0.50;
    width = height*0.65;

    coverSize = QSize(width,height);

	for(int i=0;i<4;i++)
	{
		QLabel * l = new QLabel();
		l->setFixedSize(coverSize);
		l->setScaledContents(false);
		//l->setPixmap(QPixmap(":/images/notCover.png"));
		l->installEventFilter(this);
		images.push_back(l);
	}

	for(int i=0;i<3;i++)
		bookmarksL->addWidget(pages.at(i+1),0,i,Qt::AlignCenter);

	for(int i=0;i<3;i++)
		bookmarksL->addWidget(images.at(i+1),1,i,Qt::AlignCenter);


    //last page
    QGridLayout * lp = new QGridLayout();
    lp->addWidget(pages.at(0),0,0,Qt::AlignCenter);
    lp->addWidget(images.at(0),1,0,Qt::AlignCenter);

    layout->addLayout(bookmarksL);
    QFrame *f = new QFrame( this );
    f->setFrameStyle( QFrame::VLine | QFrame::Sunken );
    layout->addWidget(f);
    layout->addLayout(lp);

    QHBoxLayout * buttons = new QHBoxLayout();

    cancel = new QPushButton(tr("Close"));
    cancel->setFlat(true);
    connect(cancel,SIGNAL(clicked()),this,SLOT(hide()));
    buttons->addStretch();
    buttons->addWidget(cancel);

    QVBoxLayout * l = new QVBoxLayout();

    l->addWidget(new QLabel(tr("Click on any image to go to the bookmark")),0,Qt::AlignCenter);
    l->addLayout(layout);
    l->addLayout(buttons);

	this->setPalette(QPalette(QColor(25,25,25)));
	//this->setAutoFillBackground(true);
    setLayout(l);
}

void BookmarksDialog::setBookmarks(const Bookmarks & bm)
{
    lastPage = bm.getLastPage();
    if (lastPage > 0)
    {
		QPixmap p = QPixmap::fromImage(bm.getLastPagePixmap());
		if(p.isNull())
		{
			images.at(0)->setAlignment(Qt::AlignHCenter|Qt::AlignVCenter);
			images.at(0)->setText(tr("Loading..."));
		}
		else
		{
			images.at(0)->setAlignment(Qt::AlignHCenter|Qt::AlignBottom);
			images.at(0)->setPixmap(p.scaled(coverSize,Qt::KeepAspectRatio,Qt::SmoothTransformation));
		}
    }
	else
	{
		images.at(0)->setAlignment(Qt::AlignHCenter|Qt::AlignVCenter);
        images.at(0)->setPixmap(QPixmap(":/images/notCover.png").scaled(coverSize,Qt::KeepAspectRatio,Qt::SmoothTransformation));

	}

    QList<int> l = bm.getBookmarkPages();
    int s = l.count();
	for(int i=0;i<s;i++)
	{
		pages.at(i+1)->setText(QString::number(l.at(i)+1));
		QPixmap p = QPixmap::fromImage(bm.getBookmarkPixmap(l.at(i)));
		if(p.isNull())
		{
			images.at(i+1)->setAlignment(Qt::AlignHCenter|Qt::AlignVCenter);
			images.at(i+1)->setText(tr("Loading..."));
		}
		else
		{
			images.at(i+1)->setAlignment(Qt::AlignHCenter|Qt::AlignBottom);
			images.at(i+1)->setPixmap(p.scaled(coverSize,Qt::KeepAspectRatio,Qt::SmoothTransformation));
		}
	}
	for(int i=s;i<3;i++)
	{
		pages.at(i+1)->setText("-");
		images.at(i+1)->setAlignment(Qt::AlignHCenter|Qt::AlignVCenter);
        images.at(i+1)->setPixmap(QPixmap(":/images/notCover.png").scaled(coverSize,Qt::KeepAspectRatio,Qt::SmoothTransformation));
	}
}

bool BookmarksDialog::eventFilter(QObject *obj, QEvent *event)
{
	if(event->type() == QEvent::MouseButtonPress)
	{
		if (obj == images.at(0))
		{
			emit(goToPage(lastPage));
			close();
			event->accept();
		}
		for(int i=1;i<=3;i++)
		{
			if(obj == images.at(i))
			{
				bool b;
				int page = pages.at(i)->text().toInt(&b)-1;
				if(b)
				{
					emit(goToPage(page));
					close();
				}
				event->accept();
			}
		}
	}
	// pass the event on to the parent class
	return QDialog::eventFilter(obj, event);
}

void BookmarksDialog::keyPressEvent(QKeyEvent * event)
{
	if(event->key() == Qt::Key_M)
		hide();
}

void BookmarksDialog::show()
{
		QDialog::show();
		disconnect(animation,SIGNAL(finished()),this,SLOT(close()));
		animation->setStartValue(0);
		animation->setEndValue(1);
		animation->start();
}

void BookmarksDialog::hide()
{
		connect(animation,SIGNAL(finished()),this,SLOT(close()));
		animation->setStartValue(1);
		animation->setEndValue(0);
		animation->start();
}
